1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b70a780cc8bdc6c595a600a7ab8bd65d14028e487d0e77dc581dc4a3532931. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a35224d3-59d3-44a6-83c3-430a6a5cb879.json and https://artists.proofprofile.net/proofs/artist/a35224d3-59d3-44a6-83c3-430a6a5cb879.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aa256a50d6d194094e6d1a2f8860349a6370794d362e4092554086b2a5a068. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1855886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc608074c965d89e3dc1c755945da716b1ad5cf915fb15957c6830f24ec8447. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADQ1845150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f5f625561333daf41ea7b4aa962ca5b6c756b23166c4b35257572f2b861e0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ4JJ1940919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03c9a7d8edfcd037c738d652c963478b069fa5b258d5977008509ef2fe04305. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ4JJ1940920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb4d19d224ee82bae30f564a96b322201814cf17dc2064402e9cc2b83b59af3. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ4JJ1940921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b593b1e81cc6556f0117f48874eeaefd3b613673634534738becb19302d081. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ4JJ1940922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d15417356ef61acffd516d7b37d4bbbcdf727fbf0a2dc33f6b4d855216d3eca. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ4JJ1940923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb424ba05e175870d33b790729747b8545f8a2a06733de2fd01d376e646886a6b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA1900293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4398f11eedf892b18f6a88c3fdd90b8322722170396ea6e304a09e39cce82. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52098729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0c8529e02c46568aa8a3f7f8c0a181e7e08ad459d3719de62d4c4312f642c3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52098730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dea55c8085a6c8a157b5876aad0d6d3ab2aaef1fb72f43344fcae0daa828bad. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52098731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b971c74f6482e0c48a0e36ee6f68d982645a3b83301e325a22d59e231c4cbc2. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52236601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cbfdc9023465a8d8c0c430b009d65ed7ec95810aca278f20d4b822e4a0d255. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52236603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda24cb7bc967c1f6fc11b4be4f0866a2765a7c6c9f2928f72e1fadd02db36987. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52236604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb342c57b39787bf2449f2f9a15ee63b92c543c670c589e34e051ac603b2a63eb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52236605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9738051d236a1e448c2b9436ce47b9da1e3cb9a5b24eb219fabb247a6389d13. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52236606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c9f630ca6022a6edff5289f088bccd3cbb28a449e8d1568f65cf9ce61c3ebd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52236607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4ed0f9d914493364341bdedd9aae2ec17717504695d6d5f5b65983d43bc8ad. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZVEM2358667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61fa0a285759fd9a62ddc5ba5d70a77cf801f1ba78e6ebf91b410e3b5d5d145. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6XS2001981.
willow ave (feat. Sewerperson & Lil Narnia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8381cfea7a26f713a33df017e82717ff8951c3b42c7731ac10a0041ee009da. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ47A2000627.